134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <assert.h>
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#include <surfaceflinger/SurfaceComposerClient.h>
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#include <ui/PixelFormat.h>
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#include <ui/DisplayInfo.h>
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#include "jni.h"
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#include <android_runtime/AndroidRuntime.h>
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#include <utils/misc.h>
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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struct offsets_t {
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jfieldID display;
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jfieldID pixelFormat;
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jfieldID fps;
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jfieldID density;
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jfieldID xdpi;
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jfieldID ydpi;
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};
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static offsets_t offsets;
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static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL)
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{
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jclass npeClazz = env->FindClass(exc);
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env->ThrowNew(npeClazz, msg);
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}
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// ----------------------------------------------------------------------------
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static void android_view_Display_init(
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JNIEnv* env, jobject clazz, jint dpy)
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{
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DisplayInfo info;
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status_t err = SurfaceComposerClient::getDisplayInfo(DisplayID(dpy), &info);
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if (err < 0) {
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doThrow(env, "java/lang/IllegalArgumentException");
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return;
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}
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env->SetIntField(clazz, offsets.pixelFormat,info.pixelFormatInfo.format);
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env->SetFloatField(clazz, offsets.fps, info.fps);
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env->SetFloatField(clazz, offsets.density, info.density);
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env->SetFloatField(clazz, offsets.xdpi, info.xdpi);
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env->SetFloatField(clazz, offsets.ydpi, info.ydpi);
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}
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static jint android_view_Display_getWidth(
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JNIEnv* env, jobject clazz)
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{
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DisplayID dpy = env->GetIntField(clazz, offsets.display);
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return SurfaceComposerClient::getDisplayWidth(dpy);
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}
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static jint android_view_Display_getHeight(
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JNIEnv* env, jobject clazz)
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{
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DisplayID dpy = env->GetIntField(clazz, offsets.display);
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return SurfaceComposerClient::getDisplayHeight(dpy);
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}
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static jint android_view_Display_getOrientation(
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JNIEnv* env, jobject clazz)
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{
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DisplayID dpy = env->GetIntField(clazz, offsets.display);
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return SurfaceComposerClient::getDisplayOrientation(dpy);
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}
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static jint android_view_Display_getDisplayCount(
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JNIEnv* env, jclass clazz)
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{
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return SurfaceComposerClient::getNumberOfDisplays();
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}
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// ----------------------------------------------------------------------------
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const char* const kClassPathName = "android/view/Display";
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static void nativeClassInit(JNIEnv* env, jclass clazz);
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static JNINativeMethod gMethods[] = {
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{ "nativeClassInit", "()V",
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(void*)nativeClassInit },
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{ "getDisplayCount", "()I",
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(void*)android_view_Display_getDisplayCount },
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{ "init", "(I)V",
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(void*)android_view_Display_init },
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{ "getWidth", "()I",
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(void*)android_view_Display_getWidth },
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{ "getHeight", "()I",
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(void*)android_view_Display_getHeight },
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{ "getOrientation", "()I",
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(void*)android_view_Display_getOrientation }
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};
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void nativeClassInit(JNIEnv* env, jclass clazz)
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{
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offsets.display = env->GetFieldID(clazz, "mDisplay", "I");
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offsets.pixelFormat = env->GetFieldID(clazz, "mPixelFormat", "I");
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offsets.fps = env->GetFieldID(clazz, "mRefreshRate", "F");
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offsets.density = env->GetFieldID(clazz, "mDensity", "F");
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offsets.xdpi = env->GetFieldID(clazz, "mDpiX", "F");
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offsets.ydpi = env->GetFieldID(clazz, "mDpiY", "F");
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}
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int register_android_view_Display(JNIEnv* env)
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{
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return AndroidRuntime::registerNativeMethods(env,
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kClassPathName, gMethods, NELEM(gMethods));
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}
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};
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